The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2015
Filed:
Apr. 26, 2011
Maurice Alexander Hugo Donners, Waalre, NL;
Maurice Alexander Hugo Donners, Waalre, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention relates to a light source for generating light having a spectral emittance in at least a part of the range of 380 nm to 680 nm. The light has a spectral power distribution E(λ) as a function of the wave-length λ over a first range of 600 nm<=λ<=680 nm, a second range of 505 nm<=λ<=600 nm, and a third range of 380 nm<=λ<=505 nm. A first ratio of the integral power distribution over said first range to that of a range of 380 nm<=λ<=680 nm is given by the relation: Formula (I) wherein 0.65<=P<=0.95, A second ratio of the integral power distribution over said second range to that of a range of 380 nm<=λ<=680 nm is given by the relation: Formula (II) wherein P>=0.08, A third ratio of the integral power distribution over said third range to that of a range of 380 nm<=λ<=680 nm is given by the relation: Formula (III) wherein P>=0.03 or P>=0.015 if P>=0.75l A respective radiation emission peak in each of the first, second and third wavelength range has a full width half maximum (=FWHM) of at least 12 nm.